Francis h



' Q-uiten gisten' atrnt @ffice Letteralate'nt1Y0. 79,418,- iiated June` 30, 1868,

IMPRQVEMENT IN BUTTON-HOLE G UIIITERS.

@te vStlgtnilt einen tu in time tetttrs utent kmh making met nf tige' same.

.TO ALL'IWHOM IT MAY CONCERN: l f Be it known that I, FRNCIVSH; WALKER, of Boston, "inthe county of Suffolk, and State of Massachusetts, have invented a new and improved BvuttonHole Cutte'ii'yand I do,hereby declare that thel following-is a full, clear, and exact description thereof, reference beingharl to the' accompanying drawings, making part of this specification, in which- 4 y Y Y Y l Figure 1 a perspective view of the improved inst Eigure 2 is a sectional view of the'jaws and anvil. l l

`Figure 3 is a 'view showing the anvil in three'di'erent lpositions withrespect to the cutter.

v.Similar letters of reference indicatecorresponding partsin the several figures. v

Thisinvention relatesto a new 'and usetnlimprovement on devices which are designed for cutting buttonholes of` different lengths in clothf Y The object of theinvention is to so construct the anvil or bed -upon which the-knife cuts,` that it shall pre;V sent surfaces of 'di'erent lengths on both sides of lit upon whichto cut; also to so construct such anvil that it v is adapted for being held iu' place upon one of the jawsof a pair ofjointed levers,'by means of a thumh-screwl t and a xed centre-pinfahout which latter the anvil can be adjusted when released from set-screw, as will be vhereafter described. Y v v K To enable others skilledin the art to und-erstandlnyinvention, I will describe'its.construction and operation.

the accompanying drawings, AIA represent two levers, which Yarevconstructed with jaws D D', and jointedft'ogethcr at C, in Aany; suitable rnenner, like a pair of common pinccrs. i

The spring B, which is between the handle'vportions of the levers, is intendedfor separating `the jaws when they* are not forcibly lheld together. i

'lvhejaw D is provided with a knife-blade, E, secured fast to it by set-screws, which knife should be as longl asthc longest button-hole` required to be cut. This jaw is also provided with `:1n eyelet-punch, a, which is inselted through-a hole made through `the jawl'lat the rear edge-of the knife, and eoninved iu place by a set. screw, @shown in iig. 1. The knit-e and `punch are ttedtogether. insuch manner that, in the act of cutting the slits with the knife,-the punch Will leave at one end of'each slit an eye, such-,as is required in working hutten-holes.4 The screwswhich congne the knife in place may pass through oblong holes through this knife, lwhich will allowA it to be adjusted for wear in sharpening it. 'A l I Beneath the Acutting-devices E and a, and applied to the'jaw D', is an anvil or cutting-bed, Gr, upon which these devices cnt. i l i This anvil isconstructed with a nuinber of'steps,g-g", Anpononeend, and with a recess of a circular form in its opposite It has-als'oa number of screw-holes inade throughit, which are arranged concentrically io the axis of the scnxicircular recess S. "The recess4 S, inthe rearend ci' the anvil, or that end which comes nearest. the joint of the-levers A A, is adapted for receiving a button-head pin, c, which is fixed into the upper surface ci' the jaw D, inthe middleofrits Width, which pin will hold the/'anvil down in place, and allow its front end -to'zhe moved laterally'about the axis of the pin. The front end of the anvil G is confined in place, when properly/adjusted, by 'means of. a thumb-screw, h, which enters one or the other of'thescrew-holes which are made through the anvil. The stern of the thumb-screw 7L is tapped through the jaw'Dl frein below, and passes only partly through the anvil, as. shown in fig. 2.

^ The rccessin the hack end of the' anvil (shown at S) is constr'ucted'with a central shoulder, shown in fig.

2,- whieh fits beneath the head upon'central pin e, whichever side of the anvil he turnedup, and thc scrcw-holes through the anvil /are adapted for receiving the thumbscrew lz, whichever side of the anvil be up. Thus it-willV be seen that the anvilis reversible, and can he used with either side up.

:The distances from the contre of pin c to the stepped edges ggg, on one side of it, are greater than thel distances from this pin c to thestepped edges g g1g', on the opposite side thereof; consequently it will ho seen. that for the di`erent steps of both sides ofthe anvil, a different length of button-hole willbe made, as the knife rument complete.

cannot cut the fabric beyond the edges of the steps. One side of' the anvil presents surfaces upon which to cut compmatively short button-holes, and the opposite side presents surfaces upon which longer button-holes v can be cut. l v l The different lengths of button-holes could becut uppm the anvil G by adjusting it bodily in a. lateral direction'beneath the knife and punch, but this'adjustment wonld not be' as simple vand quickly 'eifected as theA single screw and fixed pivot-pin. n Y. In practice, a. number of the stepped anvils may accompany each instrument, eaehone of which anvils may gijledilerent lengths of surfaces upon which to eut', and if 'desi-table, each one ef the steps updn'the ends/of the anvils may be' marked, so as to-indicate the length of the button-hole .which would be cut uppn it.

Having described my invention, whateleim as new, and desire to secure by `Letters` Patent, `is

1. A stepped anvillpz`- cutter-bed, G, adapted for use in.Av conjunction with@ knife, E, for cutting buttonholes, substantially as described.

2. reversible stepped anvil or cutting-bed, G, combinedwith retaining Picot-pin c, set-screw k, vund cutter' E, substantially as described. l

3. A reversible stepped anviloi cutting-bed, G, substantially as and for the purpose described.

i l FRANCIS H. WALKER Witnesses:

v J. DONALDSON, D. P. OoRwIN. 

